Add sigverify tests

core/src/test_tx.rs

@@ -1,5 +1,8 @@
 use solana_sdk::hash::Hash;
+use solana_sdk::instruction::CompiledInstruction;
 use solana_sdk::signature::{Keypair, KeypairUtil};
+use solana_sdk::system_instruction::SystemInstruction;
+use solana_sdk::system_program;
 use solana_sdk::system_transaction::SystemTransaction;
 use solana_sdk::transaction::Transaction;
 
@@ -9,3 +12,27 @@ pub fn test_tx() -> Transaction {
     let zero = Hash::default();
     SystemTransaction::new_account(&keypair1, &pubkey1, 42, zero, 0)
 }
+
+pub fn test_multisig_tx() -> Transaction {
+    let keypair0 = Keypair::new();
+    let keypair1 = Keypair::new();
+    let keypairs = vec![&keypair0, &keypair1];
+    let lamports = 5;
+    let fee = 2;
+    let blockhash = Hash::default();
+
+    let system_instruction = SystemInstruction::Move { lamports };
+
+    let program_ids = vec![system_program::id(), solana_budget_api::id()];
+
+    let instructions = vec![CompiledInstruction::new(0, &system_instruction, vec![0, 1])];
+
+    Transaction::new_with_compiled_instructions(
+        &keypairs,
+        &[],
+        blockhash,
+        fee,
+        program_ids,
+        instructions,
+    )
+}